Sodium flux-assisted low-temperature high-pressure synthesis of carbon nitride with high nitrogen content

被引：16

作者：

Andreyev, A ^{[1
]}

Akaishi, M ^{[1
]}

Golberg, D ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Adv Mat Lab, Tsukuba, Ibaraki 3050044, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 372卷 / 5-6期

关键词：

D O I：

10.1016/S0009-2614(03)00471-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Carbon nitride powders with high nitrogen content have been synthesized via a new, high-pressure (7.7 GPa) and relatively low-temperature (400-500 degreesC) procedure that involves a chemical reaction of hexachlorobenzene (C6Cl6) and sodium azide (NaN3) in an enclosed system for 50-70 h in the presence of a sodium flux. The obtained powder product was characterized by X-ray powder diffraction, infrared and electron energy loss spectroscopy. The nitrogen-carbon atomic ratio of the material was 1.24 +/- 0.15, which is consistent with C3N4 stoichiometry and represents the most nitrogen-rich carbon nitride yet prepared under high-pressure. Scanning electron microscopy and high-resolution transmission electron microscopy studies revealed that the material obtained was predominantly amorphous with some fraction of nanocrystallites with the reticular distance between the lattice planes approximately 0.326 nn. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：635 / 639

页数：5

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